Bike Forums - Smallest cog?

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- - Smallest cog? (https://www.bikeforums.net/singlespeed-fixed-gear/422738-smallest-cog.html)

LWaB	06-05-08 01:29 PM

Quote:

Originally Posted by dobber (Post 6769060)

Suntour offered an 11 tooth cog. Since chain clearance is an issue, the cog was undercut and you needed to use a special lockring.
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That is the first I've heard of a 11t fixed cog. Any links or other details?

Suntour did do a 11t top cog, for a multiple freewheel, that threaded into a 13t 2nd position cog (no lockring). It was quite rare and has been out of production for about 15 years.

skylar123

07-13-09 07:13 PM

actually here is a 7 tooth cog:

http://www.bikeville.com/track.html

PedallingATX

07-13-09 07:18 PM

skylar-that's a 1" pitch instead of 1/2" pitch

I ran a 13t cog and had some serious problems w/ it. Even w/ 13, the chain wasn't clearing the lockring and it caused me to strip the threads on a hub. Sucked.

Azul the Cat

07-13-09 07:31 PM

slightly off topic, but multi-speed road bikes use an 11 tooth all the time as the smallest

ianjk

07-13-09 07:36 PM

Quote:

Originally Posted by HOLYROLLER (Post 6767724)

I want a difficult ratio to build up the strength in my legs. This is part of the reason I started riding my bike again and why I chose to ride FG.

Thanks all for the input, it looks as though I will go with 55T x 12T. Currently I run 55T x 19T.;)

:roflmao2::crash:

Say goodbye to your knees. 120 gear inches? Really?

TejanoTrackie

07-13-09 08:18 PM

Quote:

Originally Posted by PedallingATX (Post 9274141)

I ran a 13t cog and had some serious problems w/ it. Even w/ 13, the chain wasn't clearing the lockring and it caused me to strip the threads on a hub. Sucked.

I had the same problem on my track bike. The lockring was wide with no taper and the outer links on the 1/8" KMC chain were deep at the bottom to help guide the chain on the sprockets, such that it was hanging up badly on the lockring. I was doing an overgear workout on the track, and had to remove the lockring and tighten the cog a bunch so it would not unscrew. Needless to say, when I was done I slowed down real easily.

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